What is that title of the Clayton Paul book?
> -----Original Message----- > From: Chris Maxwell [SMTP:chris.maxw...@nettest.com] > Sent: Tuesday, February 05, 2002 6:16 AM > To: mur...@eel.ufsc.br > Cc: EMC-PSTC Internet Forum > Subject: RE: Conducted noise emission diagnosis device > > > Hi Muriel, > > After I read your reply. I got a little scared. I actually forgot how > I did it. (It has been a few years.) I too have a commercial LISN that > has a switched output. It won't work with the separator. > > I had to actually walk over to the lab and pick through the cobwebs to > figure out what was missing. > > The BIG detail that I forgot to tell you was that I built a prototype of > the LISN that is in Clayton Paul's book as well. This LISN has the > phase and neutral emissions brought out to separate outputs, not > switched. So, in order to take the measurements, I had to use this LISN > and the separator. > > Both were built for less than $100 in parts. And as you can see, both > haven't been used for quite a while. The LISN was built before I got > into safety design, so I leave it on the shelf and use the nice "safe" > one that we purchased. > > When I get the time, I'll share some of the components... off line. For > now, it would be helpful to refer to the LISN schematic in Clayton R. > Paul's book. That will answer the question of how a single LISN could > work. > > Sorry for the confusion. > > Chris > > -----Original Message----- > > From: Muriel Bittencourt de Liz [SMTP:mur...@eel.ufsc.br] > > Sent: Tuesday, February 05, 2002 9:02 AM > > To: Chris Maxwell > > Subject: RE: Conducted noise emission diagnosis device > > > > > > Hi Chris, > > > > I have a LISN (Rohde&Schwarz) that have changing from Neutral/Phase by > > a switch. Most separators from common-mode and differential mode use 2 > > LISN's to obtain their noise currents separated. Is there a way of > > building this separator with my type of LISN? > > > > And, if it's not asking too much, do you have or know any schematic > > with construtive details of a separator? > > > > Thanks for the help! Regards, > > > > Muriel > > > > > > ---------- Original Message ---------------------------------- > > From: "Chris Maxwell" <chris.maxw...@nettest.com> > > Date: Tue, 5 Feb 2002 07:43:43 -0500 > > > > >Hi Muriel, > > > > > >I have the same book by Clayton Paul as it was used as a textbook for > > a > > >graduate course in EMC at SUNY Binghamton. > > > > > >After SUNY Binghamton, I started was working as a design engineer. > > That > > >was the year before the EMC directive became mandatory. My boss saw > > Mr > > >Paul's book in my office... and well...next thing you know, I'm > > suddenly > > >the EMC guy with "Captain Zap" for a nickname... Enough about my sad > > >fall from grace :-) > > > > > >One of the first things I did was to build one of these devices. I > > >never have seen one for sale. Honestly, until your email, I thought > > I > > >was the only person who actually tried to make one. (other than Mr. > > Paul > > >himself) > > > > > >I don't use it too much any more. We have gotten fairly good at > > >guessing whether the emission is differential mode or common mode. > > If > > >we guess correctly, it's quicker to just put in the capacitor or > > choke > > >and give it a try. > > > > > >It's been a while since I built it, so my memory is fuzzy. But I may > > be > > >able to help if you have a question or two. > > > > > >Chris Maxwell | Design Engineer - Optical Division > > >email chris.maxw...@nettest.com | dir +1 315 266 5128 | fax +1 315 > > 797 > > >8024 > > > > > >NetTest | 6 Rhoads Drive, Utica, NY 13502 | USA > > >web www.nettest.com | tel +1 315 797 4449 | > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > >> -----Original Message----- > > >> From: Muriel Bittencourt de Liz [SMTP:mur...@eel.ufsc.br] > > >> Sent: Monday, February 04, 2002 10:38 PM > > >> To: EMC-PSTC > > >> Subject: Conducted noise emission diagnosis device > > >> > > >> > > >> Hello Group, > > >> > > >> > > >> I am looking for a device that will differentiate the dominant > > >> component > > >> (either > > >> common-mode or differential-mode current) in the total conducted > > noise > > >> emission > > >> current of a product measuring through its' power cord using a > > LISN. > > >> > > >> > > >> This device can be called "common/differential mode current > > >> separator". In > > >> conducted > > >> noise emission measurement, both common-mode and differential mode > > >> noise > > >> current are measured by LISN and the LISN can't tell which mode is > > the > > >> dominant > > >> current. > > >> > > >> > > >> I came across a paper by Clayton Paul and Keith Hardin which > > explain > > >> the > > >> usefulness of a separator like this that would identified the > > dominant > > >> current > > >> from the total current. Hence, the correct capacitor value(either > > >> X-caps or > > >> Y-caps) can be changed accordingly so to reduce the overall > > conducted > > >> noise. > > >> The book by Clayton Paul "Introduction to Eletromagnetic > > >> Compatibility" has > > >> also mention about this device. > > >> > > >> > > >> I have contacted a few persons trying to look for the person who > > have > > >> actually > > >> built this separator himself and I am also looking for any vendor > > who > > >> have > > >> this > > >> product for sale. So far, my effort has yield no results. > > >> > > >> > > >> Can anybody point me to the right person so that i can try to built > > >> this > > >> separator myself. Any other suggestion and comments are greatly > > >> appreciated. > > >> > > >> > > >> Best Regards, > > >> > > >> ************************************************************** > > >> > > >> Muriel Bittencourt de Liz > > >> > > >> Ph.D. Student > > >> > > >> Federal University at Santa Catarina > > >> > > >> Florianópolis, SC > > >> > > >> Brazil > > >> > > >> > > >> > > >> > > >> ------------------------------------------- > > >> This message is from the IEEE EMC Society Product Safety > > >> Technical Committee emc-pstc discussion list. > > >> > > >> Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ > > >> > > >> To cancel your subscription, send mail to: > > >> majord...@ieee.org > > >> with the single line: > > >> unsubscribe emc-pstc > > >> > > >> For help, send mail to the list administrators: > > >> Michael Garretson: pstc_ad...@garretson.org > > >> Dave Heald davehe...@mediaone.net > > >> > > >> For policy questions, send mail to: > > >> Richard Nute: ri...@ieee.org > > >> Jim Bacher: j.bac...@ieee.org > > >> > > >> All emc-pstc postings are archived and searchable on the web at: > > >> No longer online until our new server is brought online and the > > >> old messages are imported into the new server. > > > > > > > ------------------------------------------- > This message is from the IEEE EMC Society Product Safety > Technical Committee emc-pstc discussion list. > > Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ > > To cancel your subscription, send mail to: > majord...@ieee.org > with the single line: > unsubscribe emc-pstc > > For help, send mail to the list administrators: > Michael Garretson: pstc_ad...@garretson.org > Dave Heald davehe...@mediaone.net > > For policy questions, send mail to: > Richard Nute: ri...@ieee.org > Jim Bacher: j.bac...@ieee.org > > All emc-pstc postings are archived and searchable on the web at: > No longer online until our new server is brought online and the old > messages are imported into the new server. ------------------------------------------- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Michael Garretson: pstc_ad...@garretson.org Dave Heald davehe...@mediaone.net For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: No longer online until our new server is brought online and the old messages are imported into the new server.
